King sight eoe eibeabms



33-251 OQ 195179363 5R Dec. I2, 1924, 1,517,363

y R. KAUcH ET AL RING SIGHT FOR FIREARMS Filed April 30. 1923 ROBERT KAUCH AND CHARLES L. PAULUS, OF DAYTON, OHXO.

RIG SIGHT FOR FIREARVS.

Application filed Aprirl 3U, 1923. Serial No. 635,757.

To all fr0/2,0m t may concern.'

Be it known that we, ROBERT lIAUcH and CHARLES LEIGH PAULUS, citizens of the `lnited States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Ring Sights for Firearms, of which the following is a specification.

rIhis invention relates to gun ring sights of a type ordinarily used in the rear sight of a machine gun on an airplane.

This invention has for an object the provision of a ring sight which can be accurately and quickly adjusted to compensate for varying speeds of the target or enemy craft.

A second object is to provide an adjustable ring sight having a minimum number of parts providing ease in assembly and operation.

A third object is to provide a ring sight such that the large sighting ring is maintained concentric to those with the small center sighting ring.

Further objects will become apparent as the description of the speciiic embodiment of our invention proceeds, from the claims and from the drawings, in which:

Fig. 1 is a front elevational view of our ring sight.

Fig. 2 is a sectional elevation taken on line 2 2 of Fig. 1.

Fig. 3 is a section of Fig. 1 taken on the line 3 3.

Fig. 4 is a sectional View of the line 4 4 of Fig. 1.

Referring more particularly to the drawing in which the same reference characters are applied to corresponding parts throughout, the numeral 1 designates the standard which is provided with a positioning groove 2 adapting the sight to a fixed hase upon the gun. A. support 3 projects rearwardly and upwardly from the upper part of the standard and the upper portion 4 of the support is provided with a small ring 5 which has projecting therebeyond the guide post 6 forming a bearing surface for the adjustable ring to slide up and down upon.

Mounted slidingly in the standard 1 is a rod 7 which is made integral with a supporting carriage 8 which serves as a supporting carriage for the adjustable ring in a manner to be hereinafter described. This supporting carriage is provided at the right as shown in Fig. 2 with a U-shaped strip of metal 9 which serves to guide the supporting carriage in its vertical movements on the fiat surface 10 of the support 3. Upon the rear portion of the supporting carriage 8 is mounted a screw 11 which is threaded in the lower portion of the support 3. A spiral gear 12 is mounted to rotate with the screw 11. A spiral gear 13 is adapted to mesh with the gear 12 and is made integral with reve-rsely threaded portions 14 and 15 of a transverse rod 16 upon the end ot which is rigidly mounted a hand wheel 17. Transversely movable carriages 18 and 19 which are interiorly threaded to engage the threaded portions 14 and 15 of the transverse rod and mounted upon the supporting carriage by means of dovetail guides 20 which engage with corresponding dovetail port-ions in the supporting carriage as shown in Fig. 4. These movable carriages thus serve to mount the threaded rod 16 in position upon the supporting carriage 8 so that when the adjusting wheel 17 is rotated, these carriages will move in opposite directions either toward or away from the central spiral gear 13, and the spiral gear 13 meshing with the gear 12 will at the same time rotate the screw 11 so as to elevate the main supporting carriage 8, the latter being guided in its vertical movements as before described.

The movable ring consists of a strip 21 ot suitable resilient material which is widened at 22 and one end of which is forked as shown in Fig. 3. so as to permit the opposite end to extend inside of this forked portion. The two sides of the fork together have an eX- tent equaling the width of the ring band and the enlarged portion 22 is provided so that at any point of the ring the same amount of material will be provided in order to permit the ring to assume a true circular shape as it is contracted or expanded. The two ends of the ring are attached, one to each movable carriage by means of pins 23 projecting therefrom around which the ends of the ring are shaped. The ends of the movable ring pass under the upper leg of the U-shaped member 9 and are guided from below by a projecting portion 24 which may be made integral with the spiral gear 12.

It will be seen that as the movable carriages 18 and 19 move inwardly or outwardly, the movable ring is expanded or contracted, the true circular shape being maintained by reason of the constant cross section of the strip 21. At the same time the carriage is moved downwardly or upwardly so as to maintain the movable ring concentric with the fixed small ring, the upper portion of the movable ring being guided in its vertical movements by the guide rod 6 which extends through a hole in the movable ring at its enlarged portion 22.

The device is readily assembled or disassembled by merely removing the hand adjusting Wheel and rotating the thread rod 16 so that the movable carriages move outwardly until they are free from the threaded portions of the rod. tthe same time, the screw ll Will have rotated sufficiently so as to be free from the thread portions in the support 3 and the main supporting carriage may now be left free from the support by Withdrawing the guide rod 7.

The sight as herein embodied, is adapted for sion7 enemy speed at its small diameter and for high enemy speed at its greatest diameter and the corresponding graduations Will be marked shown in Fig. l on the main supporting carriage.

lf deemed advisable, the principle of our invention may be used in a sight having three or more rings in Which any of the rings may be adjustable either by providing separate adjusting screws for each ring or by mounting several movable carriages upon the same threaded rod.

-We claiml. A gun ring sight comprising a support, a strip of metal forming a ring mounted upon said support, a member connected directly to each end of said strip, and means for moving said members relatively in a straight line to vary the diameter of said rinv.

2. A gun ring sight comprising a support, a strip of metal bent to form a ring mounted upon said support, a member connected directly to each end of the said strip and means connected directly to said members for moving them relatively to vary the diameter of said ring, said means including a threaded rod.

3. The device as set forth in claim l, together with means for maintaining the center of the ring stationary with respect to the support as its diameter is changed.

4:. A gun ring sight, comprising a support. a strip of metal forming a ring mounted upon said support, said strip of metal having a bifurcated end, a member connected to each end of the said strip, means for moving said members relatively to vary the diameter of the ring7 and guide means for maintaining the legs of the bifurcations of the one end of the strip on opposite sides of the adjacent part of the opposite end of the strip.

A gun ring sight comprising a support, a xed ring on said support, a strip of resilient material forming a ring, a member connected directly to each end of said strip, means for moving said members toward or aivay from each other, comprising a threaded rod engaging said members, a carriage supporting said rod, a gear on said rod, and means for vertically moving said carriage and rod for maintaining said rings concentric at all times comprising a gear mounted on said carriage, a threaded shaft operated by said last mentioned gear and rotatably mounted on said carriage, and a threaded portion in said support adapted to be engaged by said shaft.

6. gun ring sight, comprising a support, a strip of metal flexed to form a ring mounted upon said support, means for varying the diameter of said ring, said ring having uniform flexibility at all points along the circumference so as to maintain a true circle as the diameter changes.

In testimony whereof We affix our signatures.

ROBERT KAUCH. CHARLES L. PAULUS.

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1,517 ,363.-R0be1-t Karweh amd @hartes L. Paulus, Dayton, Ohio. RING SIGHT FOR J FIREARMS. Patent dated December 2, 1924. Disclaimer led 'September 27,

1927, by the patentees. Hereby enter this disclaimer to claims of said vatent numbered 2 and 6 andconcede originality to Walter G. McNeil and Robertllauch, jointly, as set out by them in applilatoil Serial No. 57 9,631, filed August 4, 1922, for lmprovement in adjustable rin sig t.

joial Gazette October 11, 1.927. 

